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-rw-r--r--fs/fs-writeback.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 8a5807d2fb9d..7d9d06ba184b 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -68,7 +68,7 @@ int nr_pdflush_threads;
*/
int writeback_in_progress(struct backing_dev_info *bdi)
{
- return !list_empty(&bdi->work_list);
+ return test_bit(BDI_writeback_running, &bdi->state);
}
static void bdi_queue_work(struct backing_dev_info *bdi,
@@ -740,6 +740,7 @@ long wb_do_writeback(struct bdi_writeback *wb, int force_wait)
struct wb_writeback_work *work;
long wrote = 0;
+ set_bit(BDI_writeback_running, &wb->bdi->state);
while ((work = get_next_work_item(bdi)) != NULL) {
/*
* Override sync mode, in case we must wait for completion
@@ -766,6 +767,7 @@ long wb_do_writeback(struct bdi_writeback *wb, int force_wait)
* Check for periodic writeback, kupdated() style
*/
wrote += wb_check_old_data_flush(wb);
+ clear_bit(BDI_writeback_running, &wb->bdi->state);
return wrote;
}